With the Sony S1 leak last week, it was only a matter of time before the same would happen to the Sony S2.

According to Engadget sources, the dual-screen Sony S2 will be launching as the Sony Tablet P. The reasoning behind the naming scheme or what the “P” would stand for is anyone’s guess.

Meanwhile, additional specs have come out of the rumor as well. The Tablet P is now expected to weigh in at 0.37kg (0.82 pounds) with 512MB RAM, 4G connectivity and include a 0.3MP front-facing camera with a microSD slot. The inclusion of 4G counters CNet rumors of the device being 3G only. As previously mentioned, the unit will carry dual 5.5-inch touch screens in a clamshell design powered by an Nvidia Tegra 2 APU. The tablet weight will only be a fraction of its bigger brother.

The Sony Tablet P, as well as the S, should begin hitting the market sometime this September. As such, we expect Sony to make their official final announcements on the two tablets in the upcoming week or next. AT&T has already announced that it will be carrying the Tablet P exclusively for now